Theodore Roosevelt’s ideas on Immigrants in 1907 while
still President of the United States

“In the first place, we should insist that if the immigrant
who comes here in good faith becomes an American and
assimilates himself to us, he shall be treated on an exact
equaility with everyone elese, for it is an outrage to
discriminate against any such man because of creed, or
birthplace, or origin. But this is predicated upon the
person’s becoming in every facet an American, and nothing
but an America… There can be no divided allegiance here.
Any man who says he is an American, but something else also,
isn’t an American at all. We have room for but one flag, the
American flag…. We have room for but one language here,
and that is the English language… And we have room for but
one sole loyalty and that is a loyalty to the American
people.”

Theodore Roosevelt 1907

http://www.whitehouse.gov/history/presidents/tr26.html